详情

Design of Micro-Surfacing and Chip Sealing Mixes with RAP for Local Roadway Applications

项目名称：	Design of Micro-Surfacing and Chip Sealing Mixes with RAP for Local Roadway Applications
摘要：	Over past the four decades there has been a growing interest to increase the amounts of Reclaimed Asphalt Pavement (RAP) used in construction of pavement structures. The use of RAP not only can reduce the construction cost, but it also conserves non-renewable natural resources such as the aggregates and the asphalt binder. Despite the increasing amounts of RAP used in new mixes, a recent survey by the National Asphalt Pavement Association (NAPA) indicated that there is still at least 4 million tons of RAP that has been accepted by asphalt contractors but was not used in new asphalt mixes. This amount does not include the RAP material that has been hauled to local and state agencies yards but have not been used. Therefore, during the past few years some local public agencies (LPAs) and state Department of Transportation (DOTs) have investigated the use of RAP in pavement preservation and maintenance treatments. The main goal of this study is to develop a method to design cost-effective, well-performing, and durable micro-surfacing or chip seal mixtures with various RAP contents to be used on local roadways in Ohio. It will also provide recommendations for quality control methods of RAP used in these mixtures for local roadways applications. The study will also assess the availability and feasibility of using RAP in micro-surfacing or chip seal applications and develop field study to evaluate the proposed applications.
状态：	Active
资金：	182846
资助组织：	Federal Highway Administration
项目负责人：	Lucas, Michelle
执行机构：	Ohio University, Athens
开始时间：	20200218
预计完成日期：	20220218
主题领域：	Highways；Maintenance and Preservation；Materials；Pavements